[Precision Control]Experience precise adjustments with O Ring Guitar Knobs, enhancing your electric guitar playability and control over tone and volume. [Durable Construction]Built from iron, plastic lining, and rubber for long-lasting performance; withstands the rigors of live play. [Comfortable Grip]Machined rubber O rings provide a non-slip surface for easy handling, ensuring smooth control during performances. [Universal Compatibility]Designed to fit most bass-style electric guitars, making it an ideal choice for musicians seeking reliable replacements. [Easy Installation]Featuring a 6 mm diameter aperture for simple installation on potentiometers, perfect for quick upgrades., Manufacturer: Badafaci